421865038 has 8 divisors (see below), whose sum is σ = 723197232. Its totient is φ = 180799296.

The previous prime is 421865033. The next prime is 421865051. The reversal of 421865038 is 830568124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×421865038² = 355940220573482888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421864988 and 421865006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421865033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15066595 + ... + 15066622.

It is an arithmetic number, because the mean of its divisors is an integer number (90399654).

Almost surely, 2^421865038 is an apocalyptic number.

421865038 is a deficient number, since it is larger than the sum of its proper divisors (301332194).

421865038 is a wasteful number, since it uses less digits than its factorization.

421865038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30133226.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 421865038 is about 20539.3533978069. The cubic root of 421865038 is about 749.9940965461.

The spelling of 421865038 in words is "four hundred twenty-one million, eight hundred sixty-five thousand, thirty-eight".